1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /* 29 * This file and its contents are supplied under the terms of the 30 * Common Development and Distribution License ("CDDL"), version 1.0. 31 * You may only use this file in accordance with the terms of version 32 * 1.0 of the CDDL. 33 * 34 * A full copy of the text of the CDDL should have accompanied this 35 * source. A copy of the CDDL is also available via the Internet at 36 * http://www.illumos.org/license/CDDL. 37 */ 38 /* This file is dual-licensed; see usr/src/contrib/bhyve/LICENSE */ 39 40 /* 41 * Copyright 2013 Pluribus Networks Inc. 42 * Copyright 2017 Joyent, Inc. 43 */ 44 45 #ifndef _VMM_HOST_H_ 46 #define _VMM_HOST_H_ 47 48 #ifndef __FreeBSD__ 49 #include <sys/cpuvar.h> 50 #endif 51 52 #ifndef _KERNEL 53 #error "no user-serviceable parts inside" 54 #endif 55 56 struct xsave_limits { 57 int xsave_enabled; 58 uint64_t xcr0_allowed; 59 uint32_t xsave_max_size; 60 }; 61 62 void vmm_host_state_init(void); 63 64 uint64_t vmm_get_host_pat(void); 65 uint64_t vmm_get_host_efer(void); 66 uint64_t vmm_get_host_cr0(void); 67 uint64_t vmm_get_host_cr4(void); 68 uint64_t vmm_get_host_xcr0(void); 69 uint64_t vmm_get_host_datasel(void); 70 uint64_t vmm_get_host_codesel(void); 71 uint64_t vmm_get_host_tsssel(void); 72 uint64_t vmm_get_host_fsbase(void); 73 uint64_t vmm_get_host_idtrbase(void); 74 const struct xsave_limits *vmm_get_xsave_limits(void); 75 76 /* 77 * Inline access to host state that is used on every VM entry 78 */ 79 static __inline uint64_t 80 vmm_get_host_trbase(void) 81 { 82 return ((uint64_t)CPU->cpu_tss); 83 } 84 85 static __inline uint64_t 86 vmm_get_host_gdtrbase(void) 87 { 88 89 #ifdef __FreeBSD__ 90 return ((uint64_t)*PCPU_PTR(gdt)); 91 #else 92 desctbr_t gdtr; 93 94 rd_gdtr(&gdtr); 95 return (gdtr.dtr_base); 96 #endif 97 } 98 99 static __inline uint64_t 100 vmm_get_host_gsbase(void) 101 { 102 103 #ifdef __FreeBSD__ 104 return ((uint64_t)get_pcpu()); 105 #else 106 return (rdmsr(MSR_GSBASE)); 107 #endif 108 } 109 110 #ifndef __FreeBSD__ 111 static __inline uint64_t 112 vmm_get_host_fssel(void) 113 { 114 return (KFS_SEL); 115 } 116 117 static __inline uint64_t 118 vmm_get_host_gssel(void) 119 { 120 return (KGS_SEL); 121 } 122 #endif 123 #endif 124